Clinton on '16 bid: 'I really don't believe that that's something I will do again'

While the question of whether Hillary Clinton will pursue the presidency again in 2016 has become a feverish parlor game in some DC circles, the Secretary of State herself is reiterating that she currently does not plan to run.

"I've said I really don't believe that that's something I will do again," she said in an interview with ABC's Barbara Walters. "I am so grateful I had the experience of doing it before."

Clinton, 65, said that she is unsure exactly how she will spend her time after stepping down next year from her post as the Secretary of State, but that "all doors are open" and she hopes to have time for "some reading and writing and speaking and teaching."

But she noted she is still in good health and enjoys "incredible stamina and energy."

"I've been doing, you know, this incredibly important and satisfying work here in Washington, as I say, for twenty years," she said. "I want to get out and spend some time looking at what else I can do to contribute."

The New York Times sparked a new round of speculation with a recent A1 story examining the popular Clinton's options for the future. Aides told the Times that the former First Lady hopes to spend several months early next year resting and considering what she wants her next role to be. But few dispute that former President Bill Clinton would relish the opportunity to help her with another campaign.

Clinton, a bitter foe of now-president Barack Obama during the 2008 Democratic primary, offered warm words for the man who beat her for the 2008 nomination.

"I don't think there's any doubt now, and we have gone through enormous difficult changes," she told ABC, noting the prevalence of anti-Americanism around the globe when Obama took office. "But I think everyone knows that the United States and our leadership is to be counted on."